Inner Neiting is used as an empirical point for food retention / indigestion. It is noted in CAM, page 423.
In searching online, I found that it is located opposite ST44, on the plantar surface of the foot. ST44 is Neiting, and Inner Neiting is on the other side.
I know it's been years since you posted, but I found it still online, and figured I would answer. In case you hadn't gotten it previously.
M